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/*
* Syncs downloaded Feedfiles with Feeds in the database
*
*
* */
package de.podfetcher.service;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.lang.Runtime;
import java.util.concurrent.TimeUnit;
import de.podfetcher.feed.*;
import de.podfetcher.storage.DownloadRequester;
import android.app.Service;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.os.IBinder;
import android.content.Context;
import android.util.Log;
public class FeedSyncService extends Service {
public static final String ACTION_FEED_SYNC_COMPLETED = "action.de.podfetcher.service.feed_sync_completed";
private volatile ScheduledThreadPoolExecutor executor;
private FeedManager manager;
private DownloadRequester requester;
@Override
public void onCreate() {
Log.d(this.toString(), "Service started");
executor = new ScheduledThreadPoolExecutor(Runtime.getRuntime().availableProcessors() + 2);
manager = FeedManager.getInstance();
requester = DownloadRequester.getInstance();
registerReceiver(allFeedsDownloaded, new IntentFilter(DownloadService.ACTION_ALL_FEED_DOWNLOADS_COMPLETED));
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
sendBroadcast(new Intent(ACTION_FEED_SYNC_COMPLETED));
unregisterReceiver(allFeedsDownloaded);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
executor.submit(new FeedSyncThread(handleIntent(intent), this));
return START_STICKY;
}
/** Extracts a Feed object from the given Intent */
private Feed handleIntent(Intent intent) {
Feed feed = manager.getFeed(intent.getLongExtra(DownloadRequester.EXTRA_ITEM_ID, -1));
feed.setFile_url(requester.getFeedfilePath(this) + requester.getFeedfileName(feed.getId()));
return feed;
}
/** Prepares itself for stopping */
private void initiateShutdown() {
Log.d(this.toString(), "Initiating shutdown");
// Wait until PoolExecutor is done
Thread waiter = new Thread() {
@Override
public void run() {
executor.shutdown();
try {
executor.awaitTermination(20, TimeUnit.SECONDS);
stopSelf();
}catch(InterruptedException e) {
e.printStackTrace();
}
}
};
}
BroadcastReceiver allFeedsDownloaded = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
initiateShutdown();
}
};
/** Takes a single Feed, parses the corresponding file and refreshes information in the manager */
class FeedSyncThread implements Runnable {
private Feed feed;
private FeedSyncService service;
public FeedSyncThread(Feed feed, FeedSyncService service) {
this.feed = feed;
this.service = service;
}
public void run() {
FeedManager manager = FeedManager.getInstance();
FeedHandler handler = new FeedHandler();
feed = handler.parseFeed(feed);
Log.d(this.toString(), feed.getTitle() + " parsed");
// Add Feeditems to the database
for(FeedItem item : feed.getItems()) {
manager.addFeedItem(service, item);
}
}
}
}
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